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2/3 ( 6x-15y-3 )= 4x-10y-2 dan 1/2 ( 2x-4y+6 )= x -2y+3
habis itu hasil perkaliannya kita tambah deh.....
4x-10y-2+x-2y+3=...... 4x+x-10y-2y-2+3= 5x -12y+1.... thanks ya
= 4x -10y + x -2y + 3
= 4x + x - 10y - 2y + 3
= 5x - 12y + 3
maaf kalo salah ^^